For the first time in a securities filing, Exxon Mobil Corp said that some of its oil and gas properties may face impairment due to climate change, according to a report in Reuters.

Now that we’ve hit year-end, companies will be examining whether there have been any triggering events over the course of the year, which could signal a need for asset impairment testing. Triggering events can include a number of different happenings, including adverse changes in legal factors, regulation, or business environment. It would not be a stretch to expect other oil and energy companies to experience triggering events related to climate change similar to what Exxon Mobil believes it may see.